WebTool is a consumer product built for firefox users and web developers.

Does WebTool have a free plan?

Yes — WebTool is free to use.

What platforms does WebTool run on?

WebTool runs on the web and embeddable surfaces.

Is WebTool still maintained?

Unverified. WebTool has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.

What projects are similar to WebTool?

Similar projects tracked by PulseGate include Web Toolkit Plus, Wikidata:Tools/Wikidata for Web, and Custom Search Tool.

Who develops WebTool?

WebTool is developed by WebToolDev.

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WebTool

Name: WebTool
Author: WebToolDev

mozilla.orgBrowser DevTools & extensions

WebTool is a Firefox browser extension that provides a popup for writing and executing custom JavaScript on websites. It is intended for Firefox users and web developers who need to run page scripts quickly.

FreeWebEmbeddable

Visit mozilla.org

Overview

5 features

WebTool is a Browser DevTools & extensions project. It focuses on running custom JavaScript on web pages without manually using browser developer tools. It is built as a consumer product for firefox users and web developers. WebTool costs nothing to use. WebTool is available on the web and embeddable surfaces.

Behind WebTool is WebToolDev, and it first shipped in 2019. Key capabilities include Custom JavaScript, popup editor, and keyboard shortcut. The interface is available in 32 languages, including Czech, German, and Greek.

Summary written by a language model from the project’s public pages.

Custom JavaScript
Popup editor
Keyboard shortcut
Website script execution
Browser tab access

Built with & integrations

Runs on

BrowserEmbeddable

Trust & compliance

Verified signals

HTTPSPrivacy Policy Terms of ServiceFree tierMulti-languageStore-verified publisher

Legal

Indexing history

What PulseGate has recorded for this listing

Indexed12 Sept · 15:39 UTC
WebTool verified via Firefox Add-ons
Source: Firefox Add-ons · Open

Frequently asked questions about WebTool

What does WebTool do?: WebTool focuses on running custom JavaScript on web pages without manually using browser developer tools. It is catalogued under Browser DevTools & extensions on PulseGate.
Who is WebTool for?: WebTool is a consumer product built for firefox users and web developers.
Does WebTool have a free plan?: Yes — WebTool is free to use.
What platforms does WebTool run on?: WebTool runs on the web and embeddable surfaces.
Is WebTool still maintained?: Unverified. WebTool has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.
What projects are similar to WebTool?: Similar projects tracked by PulseGate include Web Toolkit Plus, Wikidata:Tools/Wikidata for Web, and Custom Search Tool.Web Toolkit Plus Wikidata:Tools/Wikidata for Web Custom Search Tool
Who develops WebTool?: WebTool is developed by WebToolDev.
How long has WebTool been around?: WebTool first shipped in 2019.

At a glance

Pricing: Free
Platforms: Web
First seen: 12 Sept 2026
Built for: Firefox users and web developers
Model: B2C
Solves: Running custom JavaScript on web pages without manually using browser developer tools.

Registered as

Firefox Add-ons: webtool

Developer

WebToolDev

Index record

Indexed: 12 Sept 2026
Lifecycle: Alive
First seen: Sept 2026
Last seen: 12 Sept 2026

Identity audit (13)

Slug: webtool-mozilla-org
Lifecycle state recorded: 12 Sept 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 12 Sept 2026
Timeline basis: Indexed-at chronology (no inferred launch/funding milestones).
Name from: Derived from the project's own page and URL.
Category from: Assigned by a language model.
Summary from: Written by a language model from public pages.
Languages from: Detected by a language model, checked against the page's own declaration.
Last updated: 12 Sept 2026
Canonical URL: https://addons.mozilla.org/en-US/firefox/addon/webtool

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